1995 Buick Century Owner's Manual - Page 18

To raise the rear-facing third seatback: If your vehicle is equipped with a roll-up cargo cover, it must be removed before raising the seatback. 1. Open the liftgate and lift the storage compartment lid. 3. Press down on the seat release levers (one on each side of the seat), and allow the seatback to pop up. 2. Fold it forward against the seatback. 1-6